Added copy number and agilent for ovc.  Correlation of Affy profiles
to CN, and to Agilent to identify problem samples in
vignettes/ovc_copynum.R.
Added copy number for GBM and methylation for ovc.  Identify EGFR as having complementarity between somatic mutation and methylation in GBM.  In OVC, identify mixed samples by correlation between expression and copy number.  Examples are pretty quick and dirty.
Merge pull request #4 from lwaldron/master

copy number analysis for OVC, methylation/mutation analysis for GBM